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  • Valgeirsdóttir, Heiddis, et al. (author)
  • Prenatal exposures and birth indices, and subsequent risk of polycystic ovary syndrome : a national registry-based cohort study
  • 2019
  • In: British Journal of Obstetrics and Gynecology. - : WILEY. - 1470-0328 .- 1471-0528. ; 126:2, s. 244-251
  • Journal article (peer-reviewed)abstract
    • Objective: To study the associations between prenatal exposures and risk of developing polycystic ovary syndrome (PCOS).Design: National registry-based cohort study.Setting: Sweden.Population: Girls born in Sweden during the years 1982-1995 (n = 681 123).Methods: The girls were followed until the year 2010 for a diagnosis of PCOS. We estimated the associations between maternal body mass index (BMI), smoking, and size at birth with the risk of developing a PCOS diagnosis. Risks were calculated by adjusted hazard ratio (aHR) and 95% confidence intervals (95% CIs). Main outcome measures A diagnosis of PCOS at 15 years of age or later.Results: During the follow-up period 3738 girls were diagnosed with PCOS (0.54%). Girls with mothers who were overweight or obese had 1.5-2.0 times higher risk of PCOS (aHR 1.52, 95% CI 1.36-1.70; aHR 1.97, 95% CI 1.61-2.41, respectively), compared with girls born to mothers of normal weight. The risk of PCOS was increased if the mother smoked during pregnancy (1-9 cigarettes/day, aHR 1.31, 95% CI 1.18-1.47; >= 10 cigarettes/day, aHR 1.44, 95% CI 1.27-1.64). Being born small for gestational age (SGA) was associated with a later diagnosis of PCOS in crude estimates, but the association was not significant after adjusting for maternal factors.Conclusions: Maternal smoking and increased BMI appear to increase the risk of PCOS in offspring. The association between SGA and the development of PCOS appears to be mediated by maternal factors.
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  • Result 1-6 of 6

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